Zheng-Wei Yang, scholar of stereology, professor (1998-2023) of histology and embryology in North Sichuan Medical College (Nanchong, China); major research interest: quantitative study of morphological features of histological structures in various organs (especially reproductive organs) using stereological methods; book published in Chinese: “Essential Tools for Morphometric Studies of Biological Tissues: Practical Stereological Methods” (Science Press, 2012).